Test I: No High Speed Controller Area Network (HS-CAN) Communication, All Modules Are Not Responding

PINPOINT TEST I: NO HIGH SPEED CONTROLLER AREA NETWORK (HS-CAN) COMMUNICATION, ALL MODULES ARE NOT RESPONDING

I1-I2:

I3-I4:

I5-I6:

I7-I8:

I8-I9:

I10-I11:

I12-I14:

I14-I16:

I16-I18:

I19:

Normal Operation
The HS-CAN uses an unshielded twisted pair cable, circuits 1827 (WH/LG) and 1828 (PK/LG). The powertrain control module (PCM), the anti-lock brake system (ABS) module and the instrument cluster all communicate with the scan tool using the HS-CAN.

Possible Causes
- Circuit 1827 (WH/LG) open, short to ground or voltage (HS-CAN +)
- Circuit 1828 (PK/LG) open, short to ground or voltage (HS-CAN -)
- Circuit 1827 (WH/LG) (HS-CAN +) and circuit 1828 (PK/LG) (HS-CAN -) shorted together
- ABS module
- Instrument cluster
- PCM